Truck construction



May 4 1926.

H. c. DREIBUSS ThUCK CONSTRUCTION Filed April 25. 1925 2 Sheets-Sheet 1 v iililil\ Harry 017115265,

May 4 1926.

HV 6. DREIBUSS mucx cous'rnuc'non Filed April 25. 1925 2 Sheets-Sheet 2.

- Harry lfirezbwa I wwvzg v ,UNl-TED SETAT Patented May HARRY C. DRE

To all whom it may concern: Be it known thatv I, Hanar citizen of the United States,

ES PATENT err-ice.-

IBUSS, OF ST. LOUIS, MISSOURI, ASSIGNOR TO SCULLIN STEEL CO OF STrLOUIS, 1VIISSOURI, A CORPORATION-OF MISSOURI;

' TRUCK oons'rnnc'rxon.

Application filed, April 25, 1925. Serial No. 25,762.

Ci Daninnss, av residing at St.

Louis, in the.city of St. Louis .andlState of 5" Missouri, have invented certain new and useful Improvements in a Tr uck Construction,

of which the following is a specification.

This invention One object of a side frame havinga spring with plank-holdi great reduction in relates to railway car truck more particularly to the to provide plank seat dowels which permit of the size of theseatkand the invention is width of the side frame at said seat portion,

and which dowels at the same properly function with 7 7 hold the s de frames or the truck space and square.

Another object is to provide an time will the sprint plank to arrangement as indicated above, in which the dowels have projections for holding the associated springs in position. I

Another object is to provide a side frame with spring plank dowels with spring-hold,-

ing projection s which are adapted to meet the various requirements under actual service conditions.

Ihese and other objects by means of the re accomplished arrangements disclosed on the accompanylng sheets of dra\vings, inwhich Fig. 1 is a. fra

ginentary side elevation of a railway car truck embodying my invention;

Fig. 2 is a fra the same,

. Fig. 3' isa. fragmentary taken on and ,1 r Figs. o, 6,

plan views of a spring plank pin openings therein,

dowels having gmentary sectional view of taken on the line 2-2 of Fig. 1;

sectional view s s of Fig. 2; sectional view line-4rd of Fig. 2,

T and 8' are fragmentary top showing dowel and spring plank spring-holding pro ect1ons shown in top plan, said figures showing various modifications mshapes and arrangements of said dowels and their pro ections,

and also showing, in dotted lines, locations of dowels as heretofore used in certain standard trucks.

The novel features'of the invention will be apparent from the following description and the drawings, and will-be particularly pointed out in t h appended claims,

the spring plank s permits a closer spacing of said dowels.

Spring'plank holding dowels heretofore used have been round and usually four of, suchdowels havefbeen employed to hold the spring Qplankf perpendicular to the side.

framea ftliereby holding the side frames parallel for whatisknown as a squareor rigid truck." In this type of truck employinga spring plank which is not held perpendicular to the frame, the purpose of'the spring plank is. merely to hold the frames a' fixed distance apart.

multiple dowel end construction,

' \Vith a rivetedor the spring plank acts not only as a spacer but also functions to hold the truck square.

In the design of side frames now in common use, additional metal is provided in the spring seat of the side frame, for the pur pose of wideningfsame, andqthe length of correspondingly in'- creased overwhatI have found to be neces sary'to form a properspring seat, if'the spring plank holding lugs are'designcd in accordance with my present invention. In locating the dowel holes in the spring plank,

'due care must be taken to provide sufficientdistance between the'dowelholes which are punchedin the spring plankand the edge or end of the spring plank, forif this distance is made too small there will not be sufficient resistance to tearing of the metal under service conditions. In narrowing the spring seat of the side frame, I have taken due notice of this fact and have placed and shaped the spring plankholding dowels accordingly. In solving the problem, instead of providing round dowels, I have provided dowels which are non-circular and have increased the d ameter of such dowels, which Another advantage in the use of non-circular dowels is an increase in the projected or side bearing area of said dowels witl1:respect to the walls forming the openings in the spring plank for a given cross-sectional area of the dowels. Furthermore, by spacing the dowels closer together, they may be provided with extensions or projections for holding the associalped springs in position on the spring plan Referring to the figures of the drawings, and more particularly first to Figs. 1 to 4 inclusive, it will be noted that the invent-ion is illustrated in connection with a railway truck, including side frames 10, each of which has a spring seat portion 11, said side frames being spanned by a spring plank 12. In this particular instance the spring seat portion is shown as having spring seats 13 and 141- on two different levels, but-it will be understood-that invention may be used equal- 1y well in connection with side frames 'hav-' ing the spring seats all on the same level.

Referring now to Figs. 5 to 8 inclusive, it will be noted that in said figures, which are somewhat diagrammatic, that a spring plank 15 is shown and that dotted circles 16 also are shown which illustrate the location of spring plank holding dowels as now commonly located and used. Instead of locating the dowel pins as indicated at 16, I have located the dowels 17, reference now being had to Fig. 5, closer together, and have flattened one side of each of the dowels as at 18 to increase the distance between said flattened sides 18 and the end 19 of the spring plank to resist tearing of the material of the spring plank under service conditions. To compensate for moving the dowels closer to each other, their cross-sectional area has been increased to provide sufficient material to resist shearing. It will be noted that the dowels 17 have eccentrically arranged extensions or projections 20 which, however,

' are concentric with the truck springs as now used. Accordingly, by providing the dowels 17 with the eccentrically arranged projections 20, which are within the vertical confines of the dowels, simple means is provided for holding the springs in position.

In Fig. 6 three similar non-circular dowels 21 are provided which at their inner ends have spring-holding projections 22. It will be understood, of course, that the spring plank 15 is provided with holes or openings corresponding to the shape of the dowels 21. The location of the spring-holding projections 22 is such as to be concentric with the truck springs. In the lower lefthand corner of Fig. 6 there is shown, as a matter of illustration, a non-circular dowel 23, the major axis of which is not long enough to accommodate a spring-holding projection to cooperate with a spring, as indicated by the dot and dash line 24. Accordingly, if the dowel 23 is provided with a spring-holding projection the major axis of said dowel must be increased to that of the dowels 21.

ing projection could not be used.

In Fig. 6 a will be noted that the major axes of the dowels extend diagonally with respect to the spring seat portion of the spring plank.

In Fig.7 an arrangement somewhat similar to that shown in Fig. 6 is illustrated, but in this instance the dowels 25'and 26 have their major axes extending transversely of the width of the spring plank. Here again the dowels, while being capable of cooperating with the spring plank 15 to hold the truck side frame square, are not located in a m'annerto have spring-holding projections, the location of the springs being indicated by the dot and dash circles 27.

Referring to Fig. 8, four difierent modified forms of dowels are shown. The dowel 28 is so located that a full-sized spring-hold- The somewhat oval-shaped dowel 30 has an eccentrically arranged spring-holding projection 31, which may be used. The same is true with respect to the irregularly-shaped dowel 32 having a spring-holding projection 33. The dowel 34, being shaped somewhat like a kidney bean, by way of contrast, is located in such a position that it cannot be provided with a spring-holding projection, the location of the spring being indicated by the dot and dash line 35.

Referring now to Figs. 1 to 4 inclusive again, it will be noted that the spring seat portion of the side frame is reduced to a minimum, as probably best shown in Figs. 2 and 3, and that integrally formed non-circular lugs 35 are provided on the spring seats and extend through correspondingly shaped openings 36 in the spring plank 12. Two of the dowels 35 are provided with eccentrically arrange-d spring-holding lugs 37, which are circular in cross-section, and the other two spring plank holding dowels are provided with spring-holding projections 38, which are somewhat irregular in shape.

By means of the arrangement above described, the dowels are made larger to increase their shearing strength and illustrate in various forms the provision of springholding projections. The dowels are grouped more closely than the standards now in use, and an increased distance is provided between the end dowel openings in the spring plank and the ends of the spring plank to provide greater resistance against tearing of the metal of the spring blank. At the same time, by providing non-circular dowels, the projected or side bearing area of said dowels which engage the walls formed by openings in the spring plank is increased for a given cross-sectional area of the dowel.

It is my intention to cover all modifications of the invention falling within the scope of the following claims.

I claim:

1. In a railway car truck, the combination of a side frame having a seat for the reception of a spring plank, a plurality of spaced non-circular spring plank dowels on said seat whereby the end dowel may be spaced greater distance from the end of the. spring plank to resist tearing that portion of the spring plank and whereby the side bearing area of said dowels is increased for a given horizontal cross-sectional area of said dowels, and a spring plank resting upon said seat and having openings for the reception of said dowels.

2. In a railway car truck, the combination of a side frame having a seat for the reception of a spring plank, a non-circular spring plank dowel on said seat whereby said dowel may be spaced a greater distance from the end of the spring plank to resist tearing that portion of the spring plank and whereby the side bearing area of said'dowel is increased for a given horizontal cross-sectional area of said dowel, anda spring plank resting upon said seat and having an opening for the reception of said dowel, said dowel also having a portion for holding an associated spring in position.

3. In a side frame having a seat for the reception of a spring plank, a non-circular spring plank dowel on said seat whereby said dowel may be spaced a greater distance from the end of the spring plankto resist tearing that portion of the spring plank and whereby the side bearing area of said dowel is increased for a given horizontal crosssectional area of said dowel, said dowel having a spring-holding projection.

4. In a side frame having a seat for the reception of a spring plank, a non-circular spring plank dowel on said seat whereby said dowel maybe spaced a greater distance from the end of the spring plank to resist tearing that portion of the spring plank and whereby the side bearing area of said dowel trically arranged having a seat for the reception of a spring plank, non-circular said seat whereby an end dowel may be spaced a greater distance the spring plank to resist tearing "of that portion of the spring plank and whereby the f side bearing area of the dowels is increased for a given horizontal cross-sectional area of said device, and a spring plank resting on said spring seat and having openings for the reception of said dowels, said dowels having extensions for holding associated springs in position.

6. In a railwaycar truck, a side frame having a seat plank,non-circular spring plank dowels on said seat whereby an end dowel may be spaced a greater distance from the end of the spring plank to resist tearing of that portion of the spr ng plank and whereby the side bearing area of the dowels is increased tor a given horizontal cross-sectional area of said dowels, a spring plank resting on said spring seat and having openings for the reception of said dowels, said dowels having eccentricallyr arranged extensions for holding associated'springs in position.

7. A side frame-having a non-circular spring plank holding dowel with a springholding projection.

8 A side frame having a non-circular spring plank holding dowel with an eccenspring-holding projection.

.9. A side frame having a spring plank holding dowel with an eccentrically arranged spring-holding projection.

Signed at St. Louis, Missouri, this 17th day of April, 1925.

HARRY G. DREIBUSS.

spring plank dowels on for the reception of a spring from the end of 

